RU94007749A - Method of determination of constant component in sinusoidal signal
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Method of determination of constant component in sinusoidal signal
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Publication number
RU94007749A
RU94007749ARU94007749/09ARU94007749ARU94007749ARU 94007749 ARU94007749 ARU 94007749ARU 94007749/09 ARU94007749/09 ARU 94007749/09ARU 94007749 ARU94007749 ARU 94007749ARU 94007749 ARU94007749 ARU 94007749A
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Application filed by Б.Г. КелехсаевfiledCriticalБ.Г. Келехсаев
Priority to RU94007749/09ApriorityCriticalpatent/RU94007749A/en
Publication of RU94007749ApublicationCriticalpatent/RU94007749A/en
FIELD: radio engineering. SUBSTANCE: method refers to measurement technology and is meant for determination of constant component in harmonic signal. In accordance with method reference sinusoidal signal Yt with frequency Xt of examined signal is formed at specified time moments t1, t2 corresponding to centers of half-waves of reference and examined signal accordingly. Instantaneous values of these signals are measured simultaneously for fixed phase shift Fo and value of constant component Xo is found in agreement with mathematical expression Xo=(Xt1Yt1 - Xt2Yt2). Result is determined during time much shorter than half-period of oscillations of examined signal which is important while processing signals on infralow frequencies. EFFECT: increased speed of response. 2 dwg
Claims (1)
Изобретение относится к измерительной технике и предназначено для определения постоянной составляющей в гармоническом сигнале. Цель: повышение быстродействия. Сущность изобретения: формируют опорный синусоидальный сигнал Yt с частотой исследуемого сигнала Хt, в определенные моменты времени t1,t2, соответствующие серединам полуволн опорного и исследуемого сигнала соответственно, для фиксированного фазового сдвига Fо одновременно измеряют мгновенные значения этих сигналов, а значение постоянной составляющей Хo определяют в соответствии с математическим выражением: Хо = (Хt1Yt1 - Хt2Yt2) / (Yt1-Yt2). Положительный эффект: повышение быстродействия, результат определяют за время, гораздо меньшее, чем полупериод колебаний исследуемого сигнала, что важно при обработке сигналов на инфранизких частотах. 2 ил.The invention relates to measuring technique and is intended to determine the DC component in a harmonic signal. Goal: increase performance. The essence of the invention: form the reference sinusoidal signal Yt with the frequency of the investigated signal Xt, at certain times t1, t2, corresponding to the mid-half waves of the reference and the studied signal, respectively, for a fixed phase shift Fo simultaneously measure the instantaneous values of these signals, and the value of the constant component Xo is determined in according to the mathematical expression: Xo = (Xt1Yt1 - Xt2Yt2) / (Yt1-Yt2). Positive effect: increased speed, the result is determined in a time much shorter than the half-oscillation of the signal under study, which is important when processing signals at infra-low frequencies. 2 ill.
RU94007749/09A1994-03-031994-03-03Method of determination of constant component in sinusoidal signal
RU94007749A
(en)